heat flux, \(J_{q}\)

https://doi.org/10.1351/goldbook.H02755
Heat transferred through a cross section perpendicular to the flow in a small time interval divided by that time interval and the cross sectional area.
See also: flux
Source:
Green Book,2nd ed., p. 65 (https://www.cintegrado.com.br/site/documentos/green_book_2ed.pdf)